The goal of light therapy treatment for sad is to mimic the amount of light that you would experience in the summer. Sunlight has it's maximum intensity in the green spectrum. Uv light carries the obvious risk of skin cancer.

It seems to me that blue would be better. Also, the time of day in which you use the light is important - in the morning starting around 6:30am on.

In brief:
Risk

The goal of light therapy treatment for sad is to mimic the amount of light that you would experience in the summer. Sunlight has it's maximum intensity in the green spectrum. Uv light carries the obvious risk of skin cancer.

It seems to me that blue would be better. Also, the time of day in which you use the light is important - in the morning starting around 6:30am on.
Would you like to video or text chat with me?